SUMMARIZED CONDENSED CONSOLIDATING INFORMATION - Condensed Consolidating Statement of Cash Flows (unaudited) (Details) - USD ($) $ in Thousands				6 Months Ended
	Jun. 30, 2015	Oct. 03, 2014	May. 12, 2014	Jun. 30, 2015	Jun. 30, 2014
Condensed Financial Statements, Captions [Line Items]
Net cash (used in) provided by operating activities				$ 51,307	$ 28,921
Cash flows from investing activities:
Acquisitions of real estate				(301,851)	(118,389)
Origination and fundings of loans receivable				(21,737)	(38,373)
Preferred equity investments				(5,131)	(6,458)
Additions to real estate				(1,033)	(783)
Release of contingent consideration held in escrow				5,240	0
Repayment of loans receivable				2,052	0
Investment in subsidiaries				0	0
Net proceeds from the sale of real estate				1,800	0
Distribution from subsidiaries				0
Intercompany financing				0	0
Net cash used in investing activities				(320,660)	(164,003)
Cash flows from financing activities:
Proceeds from issuance of senior unsecured notes				0	350,000
Principal payments on senior unsecured notes				0	(211,250)
Net repayments (proceeds) from revolving credit facility				54,000	(135,500)
Proceeds from term loan				73,242	0
Proceeds from mortgage notes				0	57,703
Principal payments on mortgage notes				(1,340)	(87,733)
Payments of deferred financing costs				(834)	(10,135)
Issuance of common stock	$ 147,900	$ 160,600	$ 219,100	140,062	219,899
Dividends paid on common and preferred stock				(51,343)	(37,125)
Contribution from parent				0	0
Distribution to parent				0
Intercompany financing				0	0
Net cash provided by (used in) financing activities				213,787	145,859
Net (decrease) increase in cash and cash equivalents				(55,566)	10,777
Effect of foreign currency translation on cash and cash equivalents				(185)	0
Cash and cash equivalents, beginning of period				61,793	4,308
Cash and cash equivalents, end of period	6,042			6,042	15,085
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash (used in) provided by operating activities				37,007	(1,746)
Cash flows from investing activities:
Acquisitions of real estate				0	0
Origination and fundings of loans receivable				0	0
Preferred equity investments				0	0
Additions to real estate				(11)	0
Release of contingent consideration held in escrow				0
Repayment of loans receivable				0
Investment in subsidiaries				(414)	(12,122)
Net proceeds from the sale of real estate				0
Distribution from subsidiaries				1,355
Intercompany financing				(182,815)	(160,248)
Net cash used in investing activities				(181,885)	(172,370)
Cash flows from financing activities:
Proceeds from issuance of senior unsecured notes					0
Principal payments on senior unsecured notes					0
Net repayments (proceeds) from revolving credit facility				0	0
Proceeds from term loan				0
Proceeds from mortgage notes					0
Principal payments on mortgage notes				0	0
Payments of deferred financing costs				0	0
Issuance of common stock				140,062	219,899
Dividends paid on common and preferred stock				(51,343)	(37,125)
Contribution from parent				0	0
Distribution to parent				0
Intercompany financing				0	0
Net cash provided by (used in) financing activities				88,719	182,774
Net (decrease) increase in cash and cash equivalents				(56,159)	8,658
Effect of foreign currency translation on cash and cash equivalents				(185)
Cash and cash equivalents, beginning of period				58,799	3,551
Cash and cash equivalents, end of period	2,455			2,455	12,209
Issuers [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash (used in) provided by operating activities				0	0
Cash flows from investing activities:
Acquisitions of real estate				0	0
Origination and fundings of loans receivable				0	0
Preferred equity investments				0	0
Additions to real estate				0	0
Release of contingent consideration held in escrow				0
Repayment of loans receivable				0
Investment in subsidiaries				(414)	(12,122)
Net proceeds from the sale of real estate				0
Distribution from subsidiaries				1,355
Intercompany financing				(236,689)	(289,776)
Net cash used in investing activities				(235,748)	(301,898)
Cash flows from financing activities:
Proceeds from issuance of senior unsecured notes					350,000
Principal payments on senior unsecured notes					(211,250)
Net repayments (proceeds) from revolving credit facility				54,000	0
Proceeds from term loan				0
Proceeds from mortgage notes					0
Principal payments on mortgage notes				0	0
Payments of deferred financing costs				(126)	(9,222)
Issuance of common stock				0	0
Dividends paid on common and preferred stock				0	0
Contribution from parent				414	12,122
Distribution to parent				(1,355)
Intercompany financing				182,815	160,248
Net cash provided by (used in) financing activities				235,748	301,898
Net (decrease) increase in cash and cash equivalents				0	0
Effect of foreign currency translation on cash and cash equivalents				0
Cash and cash equivalents, beginning of period				0	0
Cash and cash equivalents, end of period	0			0	0
Combined Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash (used in) provided by operating activities				0	0
Cash flows from investing activities:
Acquisitions of real estate				(290,604)	(108,650)
Origination and fundings of loans receivable				(21,737)	(38,373)
Preferred equity investments				(5,131)	(6,458)
Additions to real estate				(851)	(783)
Release of contingent consideration held in escrow				5,240
Repayment of loans receivable				2,052
Investment in subsidiaries				0	0
Net proceeds from the sale of real estate				1,800
Distribution from subsidiaries				0
Intercompany financing				0	0
Net cash used in investing activities				(309,231)	(154,264)
Cash flows from financing activities:
Proceeds from issuance of senior unsecured notes					0
Principal payments on senior unsecured notes					0
Net repayments (proceeds) from revolving credit facility				0	(135,500)
Proceeds from term loan				73,242
Proceeds from mortgage notes					0
Principal payments on mortgage notes				0	0
Payments of deferred financing costs				(700)	(12)
Issuance of common stock				0	0
Dividends paid on common and preferred stock				0	0
Contribution from parent				0	0
Distribution to parent				0
Intercompany financing				236,689	289,776
Net cash provided by (used in) financing activities				309,231	154,264
Net (decrease) increase in cash and cash equivalents				0	0
Effect of foreign currency translation on cash and cash equivalents				0
Cash and cash equivalents, beginning of period				0	0
Cash and cash equivalents, end of period	0			0	0
Combined Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash (used in) provided by operating activities				14,300	30,667
Cash flows from investing activities:
Acquisitions of real estate				(11,247)	(9,739)
Origination and fundings of loans receivable				0	0
Preferred equity investments				0	0
Additions to real estate				(171)	0
Release of contingent consideration held in escrow				0
Repayment of loans receivable				0
Investment in subsidiaries				0	0
Net proceeds from the sale of real estate				0
Distribution from subsidiaries				0
Intercompany financing				0	0
Net cash used in investing activities				(11,418)	(9,739)
Cash flows from financing activities:
Proceeds from issuance of senior unsecured notes					0
Principal payments on senior unsecured notes					0
Net repayments (proceeds) from revolving credit facility				0	0
Proceeds from term loan				0
Proceeds from mortgage notes					57,703
Principal payments on mortgage notes				(1,340)	(87,733)
Payments of deferred financing costs				(8)	(901)
Issuance of common stock				0	0
Dividends paid on common and preferred stock				0	0
Contribution from parent				414	12,122
Distribution to parent				(1,355)
Intercompany financing				0	0
Net cash provided by (used in) financing activities				(2,289)	(18,809)
Net (decrease) increase in cash and cash equivalents				593	2,119
Effect of foreign currency translation on cash and cash equivalents				0
Cash and cash equivalents, beginning of period				2,994	757
Cash and cash equivalents, end of period	3,587			3,587	2,876
Elimination [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash (used in) provided by operating activities				0	0
Cash flows from investing activities:
Acquisitions of real estate				0	0
Origination and fundings of loans receivable				0	0
Preferred equity investments				0	0
Additions to real estate				0	0
Release of contingent consideration held in escrow				0
Repayment of loans receivable				0
Investment in subsidiaries				828	24,244
Net proceeds from the sale of real estate				0
Distribution from subsidiaries				(2,710)
Intercompany financing				419,504	450,024
Net cash used in investing activities				417,622	474,268
Cash flows from financing activities:
Proceeds from issuance of senior unsecured notes					0
Principal payments on senior unsecured notes					0
Net repayments (proceeds) from revolving credit facility				0	0
Proceeds from term loan				0
Proceeds from mortgage notes					0
Principal payments on mortgage notes				0	0
Payments of deferred financing costs				0	0
Issuance of common stock				0	0
Dividends paid on common and preferred stock				0	0
Contribution from parent				(828)	(24,244)
Distribution to parent				2,710
Intercompany financing				(419,504)	(450,024)
Net cash provided by (used in) financing activities				(417,622)	(474,268)
Net (decrease) increase in cash and cash equivalents				0	0
Effect of foreign currency translation on cash and cash equivalents				0
Cash and cash equivalents, beginning of period				0	0
Cash and cash equivalents, end of period	$ 0			$ 0	$ 0